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Title:
BIAS MAGNETIC FIELD IMPRESSING MECHANISM IN MAGNETO-OTPICAL DISK DEVICE
Document Type and Number:
Japanese Patent JPH056502
Kind Code:
A
Abstract:

PURPOSE: To easily change the direction of a bias magnetic field to be impressed upon a recording medium in simple constitution and to miniaturize the mechanism.

CONSTITUTION: A lengthy permanent magnet 1 is disposed on a part opposite to a disk 3, so as to be rotatable around the axial center of a holder shaft 2 extended from one end. A rotational pin 11 is provided at the axial end of the holder shaft 2, and is engaged with a guide groove 13 of a connecting part 12 consisting of a cylinder cam. An iron core part 17 is fixed to the connecting part 12, and this iron core part 17 is inserted into a self-hold type solenoid 14. In addition, a return spring 15 is disposed on the iron core part 17 between the solenoid 14 and the connecting part 12.


Inventors:
ITO SUEO
Application Number:
JP18537191A
Publication Date:
January 14, 1993
Filing Date:
June 28, 1991
Export Citation:
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Assignee:
NIPPON DENKI HOME ELECTRONICS
International Classes:
G11B5/02; G11B11/10; (IPC1-7): G11B5/02; G11B11/10



 
Next Patent: MAGNETO-OPTICAL RECORDER